chapter 12 astronomy.docx - Chapter 12 astronomy Rings,...

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Chapter 12 astronomy Rings, moons, and plutoMoons of the outer solar systemMore than 170-moonsOnly 3 in the inner solar systemLarge moonsComparable to earth’s moon sizeMedium moonsSmall moonCapture objectsGalilean Moons of JupiterFirst seen by galileoLoVolcanically activeEuropaOcean below surfaceGanymede/callistoOlder cratered surfaceLoMost volcanically active object in the solar system!25% of surface-warm lava!No impact cratersTidal heatingMoon is stretched by jupitar’s tidal forceElliptical orbit-gravitational interaction with Europa & GanymedeLike kneading a lump of clay-warms the interorEuropaA water-worldIcy surfaceOcean of liquid salt water belowSmaller than the earth’s moonBut has more water than earth!Few impact cratersYoung surfaceCracks on surface(possibly tectonic) and icy flows from the interiorSimilar arctic ocean on the EarthGanymedeThe largest moon in the solar systemMore craters than lo/EuropaOlder surface-icy, not rocky
Signs of tectonic activity and icy flowsLiquid water interiorMagnetic fieldMolten interiorCasllistoAncient, cratered surfaceIcy surface w/ manyimpact craters similar to lunar highlandsIce in the outer solar system behaves like rock in the inner solar systemNot fully differentiatedDifferent than other large objectsTitanLargest moon of saturnOnly moon with a significant atmosphere!Comparable to earthPrimarily nitrogenSimilar pressureOnly object in the outer solar system that has been landed onLakes and rivers of liquid methane!

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Term
Spring
Professor
Feiden
Tags
Solar System, Planet, Neptune, Dwarf planet, Natural satellite

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